(19)

(11)

EP 1 989 904 A1

(12)

(43) Date of publication: 12.11.2008 Bulletin 2008/46 (21) Application number: 06708039.0 (22) Date of filing: 06.02.2006

(51) International Patent Classification (IPC):  H04Q 7/38(2006.01) H04L 12/56(2006.01) (86) International application number: PCT/EP2006/050692 (87) International publication number: WO 2007/090459 (16.08.2007 Gazette 2007/33)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (71) Applicant: Telefonaktiebolaget LM Ericsson (publ) 164 83 Stockholm (SE)	(72) Inventors: JOHANSSON, Ingemar S-97632 Luleå (SE) PEISA, Janne FI-02130 Espoo (FI) (74) Representative: Ahlstrand, Mal-Sook Susanne Maria  BRANN AB Västgötagatan 2 P.O. Box 17192 104 62 Stockholm 104 62 Stockholm (SE)